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Finding the Fourth Proportional to 154,762.66, 213,581.28 and 86,801.50

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Solution

The fourth proportional to 154,762.66, 213,581.28 and 86,801.50 is: 119,791.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,762.66 : 213,581.28 = 86,801.50 : x
  2. Step 2: Convert to fraction form
    154,762.66/213,581.28 = 86,801.50/x
  3. Step 3: Cross multiply
    154,762.66x = 213,581.28 × 86,801.50
  4. Step 4: Simplify right side
    154,762.66x = 18,539,175,475.92
  5. Step 5: Solve for x
    x = 18,539,175,475.92/154,762.66
  6. Step 6: Final answer
    x = 119,791.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.